Yes, you can get a hotel room at 18 in Colorado. No state law sets a minimum check-in age, and most hotels will rent to guests who are at least 18. The catch is that each property sets its own policy, and some — particularly resorts, casino hotels, and properties with on-site bars — require guests to be 21. Confirming the specific hotel’s rule before you book is the single best way to avoid trouble at the front desk.
Why 18 Is the Usual Cutoff
Hotels draw the line at 18 because that is when Colorado law treats a person as competent to sign a binding contract. Under C.R.S. § 13-22-101, anyone 18 or older can enter into contractual obligations and be held to them the same as any other adult.1Justia Law. Colorado Code 13-22-101 – Competence of Persons Eighteen Years of Age or Older A hotel booking is a contract. That means an 18-year-old is personally on the hook for the room rate, incidentals, and any damage to the room.
Contracts signed by someone under 18 are generally voidable at the minor’s option. If a 17-year-old checks in, wrecks the room, and walks away, the hotel’s legal remedies against the guest shrink considerably. That risk is why properties typically won’t rent to anyone under 18 without a parent standing behind the reservation.
One quirk worth knowing: when an 18-year-old signs a hotel agreement, the resulting obligation is not automatically a “family expense” of the parents. The signer alone is bound.1Justia Law. Colorado Code 13-22-101 – Competence of Persons Eighteen Years of Age or Older
When Colorado Hotels Require 21 Instead
Plenty of Colorado hotels set their minimum check-in age at 21. The most common reason is alcohol. Under C.R.S. § 44-3-901, it is illegal to sell, serve, or provide alcohol to anyone under 21.2Justia Law. Colorado Revised Statutes 44-3-901 – Unlawful Acts – Exceptions – Definitions Properties with in-room minibars, lobby bars, restaurants that serve liquor, or casino floors face fines, license suspension, and possible criminal exposure if underage guests drink on site. A blanket 21-and-over rule is the simplest way to limit that risk.
Major chains leave the decision to individual properties. Marriott states that the minimum check-in age is set by each hotel, and some locations require guests to be 21.3Marriott Help Center. What is the Minimum Age Required to Check-In? Hilton also notes that the minimum age to book varies by property.4Hilton. Hilton Hotel Policies Two hotels flying the same brand can have different rules across town.
If you are 18, 19, or 20, don’t rely on the booking page. Call the specific hotel and ask.
Can a Hotel Legally Refuse You for Being 18?
In Colorado, yes. The state’s public accommodation law, C.R.S. § 24-34-601, covers hotels and defines a place of public accommodation to include “any place to eat, drink, sleep, or rest.” But the list of protected classes does not include age. The statute prohibits discrimination based on disability, race, creed, color, sex, sexual orientation, gender identity, gender expression, marital status, national origin, and ancestry.5Justia Law. Colorado Code 24-34-601 – Discrimination in Places of Public Accommodation
A Colorado hotel can turn away an 18-year-old for being 18, and the guest has no claim under state anti-discrimination law. Some other states have seen challenges arguing that 18-to-20-year-olds should be protected, but Colorado’s statute is unambiguous on this point.
The narrow exception: a hotel cannot use an age policy as cover for discrimination against a protected class. If a property waives its 21-and-over rule for some guests and enforces it against others based on race, national origin, or another protected characteristic, that is a civil rights problem.
Colorado’s Innkeeper Statute and the Payment Question
Colorado has an innkeeper statute, C.R.S. § 6-25-202, that gives hotels the right to refuse accommodations to anyone who cannot demonstrate the ability to pay by cash, credit card, or validated check.6Justia Law. Colorado Code 6-25-202 – Innkeepers Right to Refuse Accommodations For an 18-year-old, this is the practical hurdle behind the age question. If you can’t produce a valid form of payment, the hotel doesn’t have to rent to you regardless of age.
A credit card in your own name almost always solves this. A debit card usually works too, though hotels place larger authorization holds on debit cards, and those holds can take up to five business days to clear after checkout. Cash-only check-in is possible at some properties but often requires a sizable refundable deposit on top of the room rate.
What If You’re Under 18?
The innkeeper statute also lays out a path for guests under 18. It doesn’t ban minors from hotels. It says the innkeeper can require a parent, legal guardian, or other responsible adult to guarantee payment in one of two ways:
- A valid credit card number plus a written agreement covering room charges, all charges the minor makes, and any damage to the room or furnishings.
- Prepayment in cash for the full room cost including taxes, plus a cash deposit against charges and damages. The hotel must refund the unused portion after a joint room inspection at checkout.
6Justia Law. Colorado Code 6-25-202 – Innkeepers Right to Refuse Accommodations The parent does not have to be physically present. What most hotels want in practice is a signed consent form naming the minor guest and an emergency contact, along with the credit card authorization. Some properties accept the paperwork by email, others insist on originals. Notarization isn’t legally required but tends to smooth things over. Call at least a week ahead and ask exactly what the hotel needs.
School and athletic groups are the common exception. Hotels regularly host minors traveling for tournaments and school events, with the organization handling the booking and a chaperone or coach acting as the responsible adult. Chaperone-to-student ratios and room configuration rules vary widely, so confirm the specifics early.
Emancipation is not a workaround. Colorado has no procedure for a minor to petition a court for emancipated status on its own. The concept only surfaces inside other proceedings like custody or child support.7Colorado Judicial Branch. Colorado Jury Instructions – Legal Relationships There is no document a 16-year-old can carry to a hotel front desk that will change the analysis.
Checking In Smoothly at 18
Knowing the law helps. Getting through the front desk without friction takes a few practical steps.
- Call the hotel directly before booking. Online booking platforms rarely display the age policy clearly. A two-minute call eliminates the most common surprise.
- Bring valid government-issued ID. A driver’s license, state ID card, or passport all work. International travelers should carry a passport. Expired IDs won’t be accepted because the hotel is verifying both your identity and your age.
- Use a credit card in your own name when you can. Hotels place incidental holds at check-in, typically between $25 and $150 per night. On a credit card the hold clears faster and doesn’t tie up money you actually need. On a debit card it can take up to five business days.
- If you’re under 18, have the paperwork ready before you arrive. A parent’s credit card authorization and written agreement under the innkeeper statute is what the hotel needs. Don’t try to assemble it at the desk.
- Have a backup. Hostels sometimes take younger guests, though many require minors to book private rooms or travel with an adult. Vacation rental platforms have their own age rules, and the same contract-competence issues apply, so read the terms.
No Colorado statute keeps you out of a hotel at 18. The property’s own policy is what decides whether you get a room, and confirming that policy before you pay is the difference between a smooth check-in and a wasted trip.